# CORStest vs CORSy: side-by-side comparison (2026)

[CORStest](https://cybersectools.com/tools/corstest) is a free [security scanning](https://cybersectools.com/categories/security-scanning) solution. [CORSy](https://cybersectools.com/tools/corsy) is a free [security scanning](https://cybersectools.com/categories/security-scanning) solution. Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | CORStest | CORSy |
|---|---|---|
| Pricing model | Free | Free |
| Category | Security Scanning | Security Scanning |
| Verified | No | No |
| Deployment type | Cloud | On-Premises |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market |
| GitHub stars | 419 | 1,465 |
| Last commit | Aug 2020 | Nov 2021 |

### Use cases and capabilities

| | CORStest | CORSy |
|---|---|---|
| Scanner | Yes | Yes |
| Misconfiguration | Yes | Yes |

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [CORStest](https://cybersectools.com/tools/corstest) fits if you want a cloud product and you are an enterprise.
- [CORSy](https://cybersectools.com/tools/corsy) fits if you need to run it on your own servers.

## CORStest vs CORSy FAQ

Common questions when comparing CORStest vs CORSy for security scanning.

### What is the difference between CORStest and CORSy?

**CORStest**: A security scanner that identifies Cross-Origin Resource Sharing (CORS) misconfigurations in web applications to detect potential vulnerabilities.

**CORSy**: A Python-based command-line tool that scans websites for CORS misconfigurations by analyzing HTTP response headers to identify potential security vulnerabilities.

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes CORStest and CORSy?

**CORStest** is open-source with 419 GitHub stars. **CORSy** is open-source with 1,465 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is CORStest a good alternative to CORSy?

Often, yes. CORStest and CORSy are both Security Scanning products, and both cover Scanner, Misconfiguration. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [CORStest vs Domain Verity](https://cybersectools.com/compare/corstest-vs-domain-verity)
- [CORStest vs RoboShadow OWASP ZAP Vulnerability Scanner](https://cybersectools.com/compare/corstest-vs-roboshadow-owasp-zap-vulnerability-scanner)
- [CORStest vs Intruder XSS Scanner](https://cybersectools.com/compare/corstest-vs-intruder-xss-scanner)
- [CORSy vs Domain Verity](https://cybersectools.com/compare/corsy-vs-domain-verity)
- [CORSy vs RoboShadow OWASP ZAP Vulnerability Scanner](https://cybersectools.com/compare/corsy-vs-roboshadow-owasp-zap-vulnerability-scanner)
- [CORSy vs Intruder XSS Scanner](https://cybersectools.com/compare/corsy-vs-intruder-xss-scanner)

## Alternatives to each

- [See all CORStest alternatives](https://cybersectools.com/alternatives/corstest)
- [See all CORSy alternatives](https://cybersectools.com/alternatives/corsy)

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Source: https://cybersectools.com/compare/corstest-vs-corsy

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/corstest.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on CORStest and CORSy: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md